Birth control pills are a great advancement in the history of reproductive health. They were discovered in 1960 and since then many studies have been done on its side effects.
While many studies differ in their focus, tenure and other factors, they all point to the same conclusion that there is a direct link between oral contraceptives and gut.
Oral contraceptives can increase the risk of IBD. A 2016 study in which Dr. Khalili was a lead researcher stated that if you already have Crohn's disease, taking the pill can increase the need for surgery.